Hike Diamond Head
Located on the southeast coast of Oahu, not far from Waikiki, Diamond Head is one of the world's best-known volcanic craters. The view from the 760-foot summit is spectacular. The steep trail to the top is mostly paved and includes two sets of stairs — one set has 99 steps, the other set has 76 steps. They both lead to a 225-foot tunnel (bring a flashlight) and end with a spectacular view of the island's west side. This is also an excellent spot for whale watching during the winter months.